Because of the emotions involved, it's often easiest to wish that the whole issue would just go away. Well, it won't. In light of that, many of us believers choose to just ignore it as best we can. Our lives are too busy; we just don't want to get involved.
As Jesus Christ's emissaries to this world we must realize something critical: homosexuality is a gospel issue.
It is a gospel issue in the sense that homosexual behavior is sinful. While God loves homosexuals, he also does not tolerate sin.
For example, in Exodus 24:6-7 we read in God's description of himself, "...'The Lord, the Lord, a God merciful and gracious, slow to anger, and abounding in steadfast love and faithfulness, keeping steadfast love for thousands, forgiving iniquity and transgression and sin, but who will by no means clear the guilty, visiting the iniquity of the fathers on the children and the children's children, to the third and the fourth generation.' "
We see in that passage that while God is forgiving, he also will not clear the guilty (those whose sin has not been paid for).
Later in I Corinthians 6:9-11 we see the following, "Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived: neither the sexually immoral, nor idolaters, nor adulterers, nor men who practice homosexuality, nor thieves, nor the greedy, nor drunkards, nor revilers, nor swindlers will inherit the kingdom of God. And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God."
No sin is too big for God to forgive. However, God does not forgive sin that is not repented of. When people engage in repeated, sinful behavior over extended periods of time with no remorse, no regret, and no repentance, they are in serious danger of facing the wrath of God. This is a scary place to be.
None of us should be in the business of judging whether or not someone else is saved. Only God knows this. Instead, we should focus on loving and serving all people. This includes sharing the gospel of Jesus Christ when the Holy Spirit leads us to do so. The frightening thing for homosexuals is that many have been engaging in the gay lifestyle for a long time. In light of how God feels about sin, many of them are in great danger eternally. It would be unloving of us to either accept their behavior as valid or fail to at least try to befriend them and share Christ with them.
To summarize: homosexuality, like any sin, is a gospel issue. Anyone engaging in a chronic sinful lifestyle faces great danger. Only Jesus Christ can save them from this now and eternally. As those with the good news, we must always remember this and act upon it.